CAPN1 (Calpain-1) is a calcium-regulated non-lysosomal thiol protease that plays a critical role in the limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction. This protease catalyzes specific cleavage events, including CTBP1 cleavage at "Asn-375, " "Gly-387, " and "His-409, " and activation of caspase-7 (CASP7) . CAPN1 Protein, Human (His) is the recombinant human-derived CAPN1 protein, expressed by E. coli , with N-6*His labeled tag.